Invisible heart mug



FIG. 1 is a front perspective view of an invisible heart mug showing a first embodiment of our new design with a medium amount of liquid inside;

FIG. 2 is a front view thereof all four embodiments;

FIG. 3 is a rear view thereof of all four embodiments;

FIG. 4 is a bottom view of all four embodiments;

FIG. 5 is a right side view of all four embodiments;

FIG. 6 is a left side view of all four embodiments;

FIG. 7 is a top plan view of an invisible heart mug with no liquid inside showing a second embodiment of my new design;

FIG. 8 is a top plan view of an invisible heart mug being full of liquid showing a third embodiment of my new design;

FIG. 9 is a top plan view of an invisible heart mug showing a first embodiment of our new design with a medium amount of liquid inside; and,

FIG. 10 is a top plan view of an invisible heart mug showing a fourth embodiment of our new design with the least amount of liquid inside. 

CLAIM The ornamental design for an invisible heart mug, as shown and described. 